Building-form.



' J. A. STUBKJARE BUILDING FORM.

APPLICATION FILED APR. I2, 1915. RENEWED APR.20,1917.

1,239,055. I PatentedJune 12,1917. J a 56 5. 2/?6,-

1 mum M01 f og L. 11L

'KOBTTANA, ASSIGNOR T TUBULAR WALL CGMPA' H'Z',

ANA, CORPGRATIOIQ' 0F MONTANA.

FLDIN'Gr-FGBJEE g lldontan 1 usefui s "1 an"; E do .ereb declare it i'uli or, and or inven ion, such as will ens. in the art to which iu s ppertains to end use the some.

invention relates to -proveiil construction in. building terms of one type used in the constmction Hollow cement Wall An object of the invention resides in the provision of a device by means of which hollow cement walls may be formed and in provision is made for the extracafter the conipiction oi the the invention resides de ice that after the ved the members of intsined in the same the well will r5. wnen the forms were relationship exi in piece. o

A still further object of the invention resides in the provision-of a simple and eifi cient device of this character, and one 1 wherein the inner portions may be extracted without difficulty.

With these and other objects in view, such as will appeures the description progresses.

:55 my inventien comprises the combination and erran 'ement of parts as set forth in and falling within the scope of the appended claims.

Referring to the drawing:

Figure 1 is a. side elevation showing a wall being constructed with the use of the forms.

Fig. 2 is a top plan view of the sum Fig. 3 is a section on line 33 of Fig. 1. Fig. 1- is a section on line H of Fig. 1. Fig. 5 is an 'elevational view looking at the inner face of one of the wall members and showing one of the cross bar spacing supports removed and the other in position.

Fig. 6 is a. section on line 66 of Fig. 1. Referring to the drawing wherein like fipecification of Letters Patent,

li el-stewed June 12, 31921 '2' Serial No. 163,385.

Wed April 53%, 1 317.

erel views the drawing the complete (1 with the forms in 2c i well has nee l:

economize one mido .e i; use

iisdc sh therefore two end be understood that the nmzubrn may be increased as the length of the is increased.

in 1 the members of the Wall are in dicuted by the reference character It, while the outer forms or plates are indicated by the reference character 2. In order-that the said members ofthe wall may be formed by pouring cement within the outer form 2 I have provided plurality of forms which are designated by the reference characters 3, 4 and 5.

The inner form t comprises two plates 6 and 7 which have flanges 8 edges of the said flanges being arranged in contact so tha theseid plates 6 and T together with their flanges 8 will produce a rectangular form with the plates 6 '(so arranged that they are pera-llei to 5nd in spaced relation from the outer form The end forms 8 and 4 are constructed of two plates 9 and 10 which have-flanges ll thereon, the edges of which flanges Contact to produce forms which are of U-shape in cross section. The open ends of these forms. when in use, bear against the cnds12 of the outer form 2.

Thus e space 13 is provided between the outer feces of the plates 6, 7, 9 and 10 of the forms 3, 4; end 5 and the inner face of the outer form 2 so that when cement is poured between the same the members of the wall will be formed, leaving a space 1% between the said members.

In order that these forms 3, 4c and 5- may he maintained in their proper positions and prevented from collapsing during the process of building the wall, I have provided between the plates 6 and 7 of the form 41 and the plates 9 and 100i the forms 3'end 5 wedge members 15 and 16 which are oppositely arranged so that their contacting camfaces 1'? lie in the line of a. diagonal of the thereon, the

rectangle which they form. The action of these wedge members spreads the plates of the forms.

In order that the said plates may be spread to predetermined position before the wall is formed and in order that the wall may be braced after the forms have been removed, I have provided vertically arranged strips 18 adjacent the juncture of each form, which strips bear against the outer faces of the plates of the forms and have cut out portions 19 which are notched, as at 20. In each of these out out'portions is located a strip 21 which extends between the strips 18 on the opposite sides of the :lorms 3, 4 and 5 and have notches 22 therein which engage with the notches 20 in the said strips 18 so that the strips 21 are prevented from vertical displacement and the spreading action of the plates 01 the forms limited because of the binding oi the strips 18 in the notches 22 of the strips 21 These strips 22 extend between the adjacent flanges 01' the forms 3 and 5 and the form 4:. The length of the cut out portions 19 greater than the width of the strips 21 for a purpose which-will hereinafter appear.

In. operation assuming that it is desired to erect a wall of this character the strips 18 are secured in an upright position and the strips 21 placed in the cut out portions 19 so that the notches 22 therein engage with tho notches in the d strips 18.

' he forms 3, at and 5, but it is here uncod that any number of the forms at are rerpxircd because of the length of the wall may he used, are then placed be tween strips 21 and 19 so that the flanges on the said forms contact with the said strips @ne of the wedge members 15 or 16 is then placed within each of the sections 3 and 5 and the other wedge member oi each these pairs is driven downwardly so that its cam face 17 rides on the cam face of the coacting wedge so that the plates 9 and 10 of these forms are pushed outwardly to bind against the inner strips 18.

In order that the sections 4: may be like wise spread, ll use a plurality of pairs of wedges, the number being determined by the lengths of the said sections. After the forms have oeen set hp in this way the outer forms 2 are put in place and the cement poured between these forms and the forms 3, 4c and 5. After the cement has set the wedges 16 and 17 are withdrawn which allows the plates 6 and 7 of the forms L to he withdrawn from their positions and likewise the plates 9 and 10 of the forms 3 and 5. This leaves the strips 21 extending transversely of. the wall with the ends thereof embedded in the members of the wall and the strips 18 engaged. with these strips 21. These strips 18 are then pulled. upwardly so that the notches 20 are disengaged from the not hes 22 in the strips 21, at which time the strips 18 may be moved so that the strips 21 lie without the cut out portions 19 and may then be Withdrawn frombetween the members of the wall. This leaves the strips 21 extending between the members of thesaid wall and forming brace members to maintain the said Wall members in their proper spaced relation.

From the foregoing description it will be seen that I have provided an improved constructi n for use in constructing hollow cement alls, wherein the inner forms may be removed after the wall has been con structed with little diflicult, and I have provided. means for holding the inner forms in proper positions previous to the pouring of the cement, which means also acts as braces for the members of the wall after the cement has been poured. I have further so constructed the device that the inner forms will adapt themselves to various widths.

While I have illustrated and described a particular embodiment of my invention, I have merely done so for the sake of convenience and I. do not wish to be limited to that particular embodiment as it is obvious that numerous changes may be made in the details of construction thereof without in any way departing from the spirit of the invention. or exceeding the scope of the appended claims.

What 1 claim is 2 1, A wall forin' comprising oute lorms, inner forms arranged in spaced relation to the outer forms, the said inner forms composed of a plurality of sections, meanslfor expanding the sections and means for limiting the spreading movement constructed and arranged to maintain the.members of the wall thereafter in spaced relation.

2. A wall form comprising an outer form, inner forms consisting of spaced plates having angularly projecting flanges thereon, the flanges of one plate being constructed and arranged to contact with the flanges of the other plate, means for spreading the said. plates, means for limiting the spreading movement of the said plates, the said means.

consisting of horizontally arranged strips arranged to be embedded in the finished wall, and detachably engaged means for preventing the vertical displacement of the saidstrips.

8, Awall form comprising an outer iorm constructed and arranged to control the formation of the outer faces of a poured wall, and. means to control the formation or" the inner faces of the said wall comprising vertically arranged forms consisting of spaced plates with angularly extending flanges on the edges thereof, the edges of which llanges contact, pairs of wedge members arranged between the said plates to spread the same, vertically arranged strips located adjacent the junctures of the forms, said strips having cut out portions in the edges thereof, and notches in the said out out portions, and transversely arranged strips having notches therein engaging the notches in the vertical strips and constructed and arranged to prevent the transverse displacement of the first mentioned strips and W thereafter brace the members of the Wall.

In testimony whereof, I aflix my signature, in the presence of two witnesses.

JOE A. STUBKJARE.

Witnesses J. B. ANNLN, FRED L. FAHNON. 

